Replaceable hair clipping blade set



REPLACEABLE HAIR CLIPPING BLADE SET Filed March 18, 1937 INVENTOR WM MaZVZM /M ATTORNEYS Patented Aug. 8, 1939 UNITED STATES PATENT} OFFIE Mathew Andis, Racine, Wis.

Application March 18, 1937, Serial No. 131,625

9 Claims.

My invention relates to improvements in replaceable hair clipping blade sets.

The object of my invention is to provide a power driven hair clipper with improved means for replacing or substituting blades or sets of blades. whereby combs and vibratory cutter blades of differing thicknesses in their toothed or work-.

ing portions may be substituted handily, quickly, and the substituted set of blades operated with the same efficiency as any other set'of blades intended to be used in the same assembly.

My invention contemplates the use of shearing combs having teeth of a thickness corresponding with the teeth of ordinary power driven hair 18 clipper combs and a substitution therefor, without material loss of time, of a comb plate having teeth of razor-like thinness, whereby hair may be clipped in such close proximity to the skin I that the tool may be aptly characterized as a shaving clipper.

My invention also contemplates substitutions of shearing combs and vibratory cutters of intermediate thicknesses or of different characteristics in their working portion, all without change in the driving and tensioning means with which the blades are associated, and with such facility as to encourage substitutions at different stages of a single clipping operation.

In the drawing:

hair clipper embodying my invention.

Figure 2 is an enlarged fragment of the holder,

showing the 'nose portion, the blades, and the tensioning means in section, drawn generally to 5 line 2-2 of Figure 3.

Figure 3 is a fragmentary view of the comb and associated parts as seen from the under side, the comb plate being broken away to expose the vibratory cutter. I

Figure 4 is a, sectional view of a modified comb and its mounting, showing the. same detached from the holder.

Figure 5 is a sectional view of a comb plate 7 intended to be used interchangeably with that shown i'nFigures 1, 2, and 3.

Figure 6 is a fragmentary plan view of the same.

Like parts are identified by the same reference characters throughout the several views.

The holder or handle Ill may beof any ordinary type. Such holders are usually made hollow and are provided with driving mechanism, usually either a rotary motor or an electromagnetic motor having a vibratory armature. Motion is transmitted from the motor to a vibratory cutter blade I2 through an arm or lever ll, which usually has a forked forward extremity in resilient bearing engagement within a notch M in the cutter blade. The cutter blade is held in pressure relation to a shearing comb plate l5 by means of 6 a tension plate l6, which, in the construction shown. has a rear margin I! connected with an oblique seating IS on the holder [0. An opening is provided in the tension plate through which the operating arm ll passes, and at its forward 10 margin the tension plate is provided with a guide bar l9 which enters a suitable channel in. the upper surface of. the cutter blade l2 to guide the cutter blade for oscillation along a line transverse to the axis of the motor. 15

A mounting plate 24 is secured by screws 25 to an obliquely faced portion of the holder and at its respective ends arms 26 project forwardly and carry a comb supporting rod or bar 21 adapted to fit a groove 28 in the under surface of 20 the central portion of the comb plate 20. This grooveis preferably located slightly to the rear of the longitudinal center line of the comb plate. The rear margin of the comb plate abuts a shoulder 30 of the mountingplate 24. In Figure 2 '5 the comb plate has a flange 32 which underliesthe shoulder 30, whereas in Figure 4 the mounting plate has a flange 33 which overhangs the rear margin of the comb plate. In both structures the rear margin of the comb plate is held 30 against upward movement.

The bar 21 serves as a saddle member for the shearing comb plate l5, and this saddle loosely interlocks along the longitudinal center line of the comb plate under the resilient pressure ap- 5 plied to the plate through the cutter blade l2. The rear margin of the plate l5 abuts the mounting plate in the rear of the saddle with a marginal portion of the mounting plate overlapping a marginal portion of theshearing comb plate Hi to plate and cutter blade to be pushed upwardly far 50 enough to release the comb plate 20 from the supporting cross rod 21. 'I'hereupon the comb plate may be withdrawn forwardly and the cutter blade allowed to drop down the guide bar 18 to a position for withdrawal. 55

Either the same cutter blade or a substitute blade of similar contour in its top and rear portions may then be re-inserted and the comb plate, or a substitute, will thereupon be pushed underneath it and over the supporting rod 21 until the rear margin of the comb plate engages the mounting shoulder 30.

It will be noted that the arms 26 which carry the supporting and locking cross rod 21 are positioned to embrace the end margins of the comb plate I5 to prevent lateral movement of the comb plate. Therefore, these arms cooperate with the rod 21, the mounting shoulder 30, and the blade flange 32 to securely hold the comb plate in operating position.

It can be released only by lifting its toothed margin until its grooved central portion can be disengaged from the supporting rod 21.

In Figures 5 and 6 I have illustrated a comb plate l5a of increased thickness, which may be substituted for the plate 15 shown in Figure 1, 2, and 3. The teeth of the plate 15a. may also be more widely separated than the teeth of the plate I claim:

1. In a device of the described class, the combination of a holder provided with a fixed mounting for interlocking engagement with the rear margin of a shearing comb plate, a shearing comb plate having a channel in the central portion of its under surface, and a comb plate supporting rod interlockingly engageable in said channel and having its ends connected with the mounting across the ends of the comb plate.

2. In a hair clipper, the combination with a suitable handle, of a shearing comb plate mounting rigidly secured thereto, a shear plate having a rear margin adapted for sliding interlocking engagement with the mounting and a comb plate supporting saddle fixedly connected with the mounting and handle in position for supporting engagement with the under surface of the shear plate between its front and rear margins, said shear plate having its under surface formed to loosely embrace the saddle sufficiently to prevent forward movement of the plate while in such engagement, and means for resiliently opposing upward movement of the comb plate to normally prevent the forward movement of the plate to a position of release from the mounting.

3. In a device of the described class, the combination of a comb plate mounting, a shearing comb plate having its rear margin slidingly interlocked with the mounting, and a supporting member extending from the mounting around the ends of the plate and underneath the central portion of the plate and forming a relatively fixed support for the plate over which the plate may be manually withdrawn in a forward direction.

4. In a device of the described class, the combination of a comb plate mounting, a shearing comb plate having its rear margin slidingly interlocked with the mounting and a comb plate support comprising a rod having its ends connected with the mounting, and an intermediate portion extending from one end portion of the plate to the other, the plate havinga groove to partially receive said rod.

5. In a device of the described class, the combination with a shearing comb plate and a holder, of a mounting for said plate fixedly secured to the holder and provided with a plate supporting saddle member extending underneath the central portion of the plate, said plate and saddle being formed to loosely interlock to normally prevent forward movement of the plate with reference to the saddle, said mounting also having a shoulder abutting the rear margin of the plate and partially overlapping a portion of the plate along such margin to prevent upward movement of the plate while permitting free sliding movement in a forward direction when the plate is lifted from the saddle.

6. In a device of the described class, the combination of a handle, a comb plate mounting fixed to the handle, a forwardly and downwardly offset saddle in fixed relationship to the mounting and handle, a shearing comb plate having the central portion of its under surface normally in loose bearing engagement with the saddle, and its rear marginal portion abutting the mounting and slidingly engaging portions thereof, and devices associated with the mounting and handle and extending across the ends of the comb plate to prevent lateral shifting movements thereof, the comb plate being otherwise unconnected With the mounting and handle.

7. In a hair clipper, the combination of a holder provided with a fixed mounting plate and a comb plate anchor rod having its ends supported from the mounting plate in front of said plate with said rod below the plane thereof in a position for anchoring engagement with the under surface of a comb plate when the rear margin of the comb plate is in abutting relationship to a portion of the mounting plate.

8. In a device of the described class, the combination of a holder, a mounting plate fixedly secured to the holder, 2, comb plate in the same plane with its rear margin in shouldered engagement with the forward margin of the mounting plate, a comb plate supporting and anchoring member carried by the mounting plate underneath the central portion of the comb plate, and a vibratory cutter blade mounted on the comb plate under resilient pressure in the direction of said member, said supporting and anchoring member being fixed relatively to the holder during comb plate releasing operations, and adapted by interlocking engagement with the comb plate to prevent movement of the latter in any direction other than an upward and forward movement of withdrawal.

9. In a device of the described class, a holder, a mounting plate fixed to the holder, a comb plate in edge to edge relationship to the mounting plate with a marginal portion of one of the plates overlapping a marginal portion of the other plate, a comb plate supporting saddle member in fixed relationship to the holder and normally engageable under the contral portion of the comb plate and normally loosely interlocked therewith sufiiciently to prevent forward movement of the plate. a vibratory cutter blade mounted on the upper surface of the comb plate, and means for applying resilient pressure to the cutter blade and comb plate in the direction of said supporting saddle member, said comb plate being manually removable in an upward and forward direction under sufiicient pressure to retract the cutter blade in opposition to said resilient pressure applying means, and said mounting being formed to prevent withdrawal of the comb plate in any other direction.

MATHEW ANDIS. 

